Mixin is a cross-chain payment network for digital assets. Mixin provides a cross-chain solution with built-in smart contracts that facilitates crypto-asset transfers. Developers can also build cross-chain DApps based on Mixin Network protocol.
Mixin also has a messenger that is built on top of their platform and allows users to access their crypto-assets with a phone number and a 6-digit PIN code. Mixin supports Bitcoin, Bitcoin Cash, Litecoin, Ethereum, Ethereum Classic, Ripple, Sia, and plans on adding more.
The network is powered by the XIN token.

Liquality is developing a cross-chain technology that will allow users to covert Ethereum to Bitcoin, and vice versa with minimal risk and fees, while maintaining control over their private keys. Their interface offers a secure way to exchange cryptocurrencies by using atomic swaps. Liquality is a ConsenSys portfolio company.